So I just found out that Melissa Fumero was actually pregnant and they used the 'fake pregnancy' to hide it : r/brooklynninenine
Brooklyn Nine Nine's Melissa Fumero pregnant with second child | Metro News
Andy Samberg & 'Brooklyn Nine-Nine' Cast Talk Season Three at FYC Panel!: Photo 3384850 | Andy Samberg, Chelsea Pretti, Joel McKinnon Miller, Melissa Fumero, Stephanie Beatriz, Terry Crews Pictures | Just Jared
Melissa Fumero 🇨🇺 #SOSCuba on Twitter: "Day 1. Episode 1. Season 3. 😜# Brooklyn99 http://t.co/LxB2JwbRKW" / Twitter
Melissa Fumero, 'Brooklyn Nine-Nine' - The Most Ridiculous Ways TV Shows Hid Their Stars' Pregnancies - Zimbio
Maximum Security | Brooklyn Nine-Nine Wiki | Fandom
Brooklyn Nine-Nine's Melissa Fumero On Amy's Pregnancy